Mechanical movement.



Patented Dec. 15, 1914.

2 SHEETSSHEET l.

I11 ven tor:

P. E. BRIGHT. MECHANICAL MOVEMENT.

APPLICATION FILED JAN. 21, 1914.

1,1 20,679. Patented Dec. 15, 1914.

Z SHEETS-SHEET 2.

t; I g Inventor: b 3 byv flaw FRED EUGENE BRIGHT, OF PHILADELPHIA, PENNSYLVANIA.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed January 21, 1914. Serial No. 813,406.

T 0 all whom it may concern:

Be it known that I, FRED E. BRIGHT, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to mechanical movements, and has reference more particularly to that type wherein a constant rotary motion may e converted into anintermittent reciprocating motion. In Letters Patent of the United States No. 1,074,832 granted to me on the 7th day of October, 1913, a mechanical movement of this type is shown and described as applied to a key board mechanism, such as is employed in linotype machines to govern the release of the matrices from the magazine. The mechanism of said patent comprises a rotated driving member in the form of a pinion, a rotatable driven member of like form movably mounted so that it can be engaged with and disengaged from the driving member, a swinging plate adapted to contact with and hold the driven member out of engagement with the drivin member, means controlled by the finger ieys of the key board for normally sustaining the plate so that it can hold the driven member out of engagement with the driving member, the said means being operable by the actuation of the keys to release the plate and permit the driven member to engage the driving member, and a rod or bail connected with the driven member and adapted to actuate the escapement mechanism controlling the release of the matrices from the magazine, the form and construction of the said parts being such that when a finger key was depressed, the driven member was operated by the driving member so as to reciprocate the bail endwise and actuate the escapement mechanism, the continued rotation of the driven member causing its disengagement from the driving member, and automatically restoring the parts to their former normal position.

The present invention is an improvement on the mechanism of said patent, and it has in view to produce a pause or dwell in the action of the escapement operating member or bar, in order to give the released matrix time to free itself from the escapement mechanism before the latter returns to its holding position, and to produce this result I propose in accordance with the present invention to connect the escapement operating rod with the sustaining plate, and to so form the said plate and driven member relatively that in a certain period of the rotation of the driven member, the plate will be shifted and will operate the rod, but in another period of the rotation of the driven member, the plate will be supported or held against movement while the driven member continues to rotate, this holding of the plate against movement producing the pause or dwell in the action of the escapement actuating rod as will be more fully described hereinafter.

A further object of my invention isv to prevent damage to the escapement actuating parts and the parts connected therewith in the event that the escapement mechanism should become clogged, or its action in any way interfered with. To produce this result I propose to so form the escapement actuating rod, that it will yield longitudinally when subjected to undue strain.

In the accompanying drawings: Figure 1 is a transverse vertical section through the keyboard of a linotype machine having my invention applied thereto; Fig. 1-is a longitudinal sectional elevation on the line a-a of Fig. 1; Fig. 1 is a cross-section on the line b-b of the preceding figure; Fig. 2 is a sectional front view of the keyboard; and Figs. 3, 4 and 5 are detail views showing the parts in successive operative positions.

Referring to the drawings: As is usual in linotype machines, the matrices A are stored in the magazine M and their release therefrom is governed by an escapement B, all in the manner well understood in the art. Each escapement is operated by a reciprocated rod or bail I, the exact connection of which to the escapement is immaterial and constitutes no part of the present invention. As is also customary, the machine is provided with a key board having a series of keys C, whereby the respective matrices are selected, their delivery being automatically effected through the specific means new to be described. Each key C is held in its upward or normal position by a spring I), and is connected by a link E to a pivoted dog or -pawl F which sustains the escapement-rod operating, parts in normal or inoperative position. The dog or pawl F is provided withtwo operative faces or notches 11 and 12, and its throw is limited by the engage- -ment of a projecting pin G with the curved slot H in the manner more fully described hereinafter.

Power is transmitted to the respectively selected rod operating parts by a constantly actuating roll or driving member 2 located K. Each of the gears .3 is formed with a' projecting hub or boss L which in assembled position occupies the vertically elongated slot 5 in the plate K. The effect of this arrangement is to permit not only the rotation of the gear 3, but also a limited radial motion toward and from the driving member 2. Normally the gear 3 is at its uppermost or inoperative position as shown in Fig. 1, that is to say with its hub 4 in the upper portion of the vertical slot 5. This relation of the parts is maintained by means of the separate and independent holding device 7 which is pivotally mounted on the plate K and to which the lower end of the rod or bail I is jointed. In the form shown the holding device is provided with two extending branches, an upper arm 8 and a lower arm. 9. The lower arm normally rests in the upper notch 11 of thepivoted dog or pawl F previously referred to, and in this position it supports the gear 3 by reason of the engagement therewith of a portion or stud 6 located eccentrically on the gear.

When the key C is depressed, through the connections previously described, the dog or pawl is rocked outwardly and the arm 9 of-the holding device is permitted to drop until it enters and engages the lower notch 12, which position of the parts is shown in Fig. 3. The support for the gear 3 being thus removed 1t drops into engagement with the driving member 2 and the rotation of the gear is initiated as indicated by the arrow thereon. During this rotary movement the eccentrically located stud enga es under the upper arm 8 of the holding evice 7 thus raising the latter above its normal position. When the'arm 9 has been thus removed from the notch 12 in the dog F the spring I) previously referred to restores the dog to its normal position, and

continues until the driving and driven.

members are entirely separated, and even then by momentum, until the eccentrically located stud 6 comes into engagement and is arrested by the stop shoulder 10, when the parts are again in the position indicated in Fig. 1. The form of the under side of the upper arm 8 is such that when the driven'member begins its rotation from its normal position at rest, the eccentrically located stud engaging said arm 8 will swing the holding device upwardly on' its axis,

and will move the rod I vertically to its highest position and effect the release of the matrix held by the escapement mechanism, the continued rotation of the stud beyond this point, sustaining the holdin member in its highest position with the r0 I at rest, and thereafter disengaging the holding member and permittin it to fall and move the rod I downward y so as to actuate the escapement mechanism to arrest the next matrlx, these actions resulting in a pause or dwell of the escapement actuating rod after it has been raised to its highest point. These operations are .efi'ected by providing the under side of the upper arm 8 of the holding device with a cam surface 8 bearing such relation to the axis of rotation of the driven. member, that as the eccentrically located stud thereon en ages this cam surface in the rotation o the driven member, the holding device will be raised as described. Adjoining this cam surface is a curved surface 8 which extends for the remainder of the length of the under side of the arm 8, this surface 8 being struck from a center coincident with the axis of rotation of the stud 6. As a result, of this arrangement and relation of the parts, when the stud travels over the curved surface 8", it will, owing to the'piv otal support of the holding device at a point distant from the axis of the driven. member, serve to sustain the holding device in the position to which it was raised by anism above referred to. The holding device will be held at rest until the stud leaves the end of the cam surface 8, Whereupon the holding device will drop to its former inoperative position, thereby drawing the rod I downwardly and the parts will automatically come to rest with the driven member out of engagement with the drivin member. It will be obvious that if the tripping means he held continuously out of action, as for instance by holding the connected key down, the gear 3 will be permitted to engage constantly with the driving member 2 this resulting in an interrupted operation of the escapement or other part.

The rod or bail I is as shown in the form of two sections or parts, an upper part I and a lower part P, which parts are connected together end to end in such manner that they will yield relatively endwise when subjected to undue or abnormal strain. As a convenient method of efiecting this object I widen the upper end of the section I and form thereon longitudinally extending lips I which are bent inwardly and folded down on the lower end of the part I, so as to inclose and bear on said part with considerable friction. The end of'the part I inclosed by the lips is bent or ofiset so that enough frictional resistance will be offered to the slippage of the parts relatively to each other, to enable the escapement mechanism to be operated under normal conditions. In the event, however, of obstruction being offered to the operation of the escapement mechanism, the upward movement of the supporting member 7 due to the rotation of the driven member, will slide the lower part I of the bar on the upper part, which action will prevent any injury to or strain on the connected mechanism. When the parts of the bar are thus shifted relatively, they may readily be restored by hand to their former operative position after the obstruction to the operation'of the escapement mechanism has been removed.

lVhile in the accompanying drawings and foregoing description I have shown and described my invention as applied to the key board mechanism of a linotype machine, it will be manifest that the invention is applicable as well to other mechanism, and for other purposes where the conditions are such that the actions and results described are desirable; and while I have shown my invention in the detailed form which I deem the most desirable and efficient for the ends in view, it will be manifest that the invention may be variously changed and modified in respect to such details without departing beyond the limits of the same; and further it will be understood that the invention is not limited to any particular form or construction of the parts except in so far as such limitations are specified in the claims.

Having thus described my invention, what I claim is:

1. The combination with a rotated driving member and a rotatable driven member capable of engaging therewith, of a movable device adapted to be enga ed and moved by the driven member, an an actuating member operated by the movable device, the said driven member and movable device being formed relatively to cause the actuating member to pause after its effective movement.

2. The combination with a rotated driving member, a rotatable driven member capable of engaging therewith and provided with an eccentric portion, a movable device provided with variant cam surfaces with which said eccentric portion is adapted to successively engage to operate said device, and .produce a pause in its operation respectively, and an escapement actuating member operatedby the said movable device.

3. The combination with a rotated driving member, of a rotatable driven member capable of engaging therewith and provided with an eccentric portion, a movable device provided with a cam surface adapted to be capable of engaging therewith, of a device to' contact with and hold the driven member out of engagement with the driving member, the said driven member being independently mounted relatively to the holding device, and being movable toward and from both the driving member and the holding device, and an actuating member independent of the driven member and adapted to be operated by the holding device.

5. The combination with a rotated driving member and a rotatable driven member capable of engaging therewith, of a holding device to hold the driven member out of en gagement with the driving member, and an escapement actuating member jointed to and operated by the holding device.

6. The combination with a rotated driving member and a rotatable driven member capable of engaging therewith, of a device to contact with and hold the driven member out of engagement with the driving member, said driven member being independently mounted relatively to the holdin device, and movable to and from both the driving member and holding device, and an actuating member jointed to and operated by the holding device.

7 In combination with an escapement, an actuating rod-therefor, and means for operating the same, the said rod being in the form of two sections clamped together face to 'face infixed relations to each other in close frictional contact and adapted to move relatively to each other when subjected to undue strain.

In testimony whereof I have aifixed'my signature in presence of two witnesses.

v I FRED EUGENE BRIGHT. Witnesses:

'CHARLES S. BUTLER, A. E. RUTTKAMP. 

